Dual Layer Flexible PCB Built on Polyimide With Immersion Gold and PI Stiffener
(FPC’s are custom-made products, the picture and parameters shown are just for reference)
General description
This is a type of flexible printed circuit (FPC) for the application of Wi Fi Antenna. It’s a 2 layer flex board at 0.15mm thick. It contains yellow coverlay (solder mask) and without silkscreen on entire board, and immersion gold is applied on pads. Polyimide as stiffener is applied on the connector part. The base laminate is from Shengyi and they're fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 200 pieces are packed for shipment.
Parameter and data sheet
| Number of Layers | 2 |
| Outline Dimension | 21.15 x 58.93mm = 1PCS |
| Board Type | Flexible Circuit |
| Board Thickness | 0.15mm +/-10% |
| Board Material | Polyimide (PI) 50 um |
| Board Material Supplier | ITEQ |
| Tg Value of Board Material | 60℃ |
| |
| PTH Cu thickness | ≥20 um |
| Inner Iayer Cu thicknes | N/A |
| Surface Cu thickness | 35 um (1oz) |
| |
| Coverlay Colour | Yellow |
| Number of Coverlay | 2 |
| Thickness of Coverlay | 25 um |
| Stiffener | 200 um |
| |
| Type of Silkscreen Ink | IJR-4000 MW300 |
| Supplier of Silkscreen | TAIYO |
| Color of Silkscreen | White |
| Number of Silkscreen | 1 |
| |
| Mininum Trace (mil) | 4 mil |
| Minimum Gap(mil) | 4 mil |
| |
| Surface Finish | Immersion Gold |
| RoHS Required | Yes |
| Famability | 94-V0 |
| |
| Thermal Shock Test | Pass, -25℃±125℃, 1000 cycles. |
| Thermal Stress | Pass, 300±5℃,10 seconds, 3 cycles. No delamination, no blistering. |
| Function | 100% Pass electrical test |
| Workmanship | Compliance with IPC-A-600H & IPC-6013C Class 2 |
Features and benefits
Excellent flexibility;
Reducing the volume;
Weight reduction;
8000 types of PCB per month;
Quick CADCAM checking and free PCB quotation;
No minimum order quantity. 1 piece is available;
Volume Production capability;
On-time service;
More than 18 years of experience;
Applications
Keypad FPC; Toy lamp strip; Display backlight; Flex keyboard for mobile phone keys; POS antenna soft board; LCD TV soft board; Digital camera soft board.
Double-Sided Flexible Circuits
As the name suggests, the circuit consists of a thin and flexible base material with copper foil laminated to each side. The outer sides of the finished circuits are frequently provided with coverlays bonded to the outer sides (copper). Plated-through holes in double-sided flexible circuits are usually drilled, instead of punched. Usually the flexible circuits are provided with a coverlays on both sides
Manufacturing Process of Double Sided FPC
Although manufacture of double-sided PTH flexible PCB resembles that of single-sided non-plated-through boards, some of the manufacturing processes are not identical and appear in another sequence. Below it shows the processes of how to manufacture a double sided flexible circuits.
More Displays of Double Sided FPC
